diff --git a/src/ReactiveUI.DI.Tests/ReactiveUI.DI.Tests.csproj b/src/ReactiveUI.DI.Tests/ReactiveUI.DI.Tests.csproj
index d41b62559..fd2e2da55 100644
--- a/src/ReactiveUI.DI.Tests/ReactiveUI.DI.Tests.csproj
+++ b/src/ReactiveUI.DI.Tests/ReactiveUI.DI.Tests.csproj
@@ -28,7 +28,7 @@
   </Choose>
 
   <ItemGroup>
-    <PackageReference Include="ReactiveUI" Version="18.2.9" />
+    <PackageReference Include="ReactiveUI" Version="18.3.1" />
   </ItemGroup>
 
   <ItemGroup>